Nonstop flight route between Mokuleia, Hawaii, United States and St. Catharines, Ontario, Canada:
Departure Airport:

Arrival Airport:

Distance from HDH to YCM:
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- About this route
- HDH Airport Information
- YCM Airport Information
- Facts about HDH
- Facts about YCM
- Map of Nearest Airports to HDH
- List of Nearest Airports to HDH
- Map of Furthest Airports from HDH
- List of Furthest Airports from HDH
- Map of Nearest Airports to YCM
- List of Nearest Airports to YCM
- Map of Furthest Airports from YCM
- List of Furthest Airports from YCM
About this route:
A direct, nonstop flight between Dillingham Airfield (HDH), Mokuleia, Hawaii, United States and St. Catharines/Niagara District Airport (YCM), St. Catharines, Ontario, Canada would travel a Great Circle distance of 4,672 miles (or 7,519 kilometers).
A Great Circle is the shortest distance between 2 points on a sphere. Because most world maps are flat (but the Earth is round), the route of the shortest distance between 2 points on the Earth will often appear curved when viewed on a flat map, especially for long distances. If you were to simply draw a straight line on a flat map and measure a very long distance, it would likely be much further than if you were to lay a string between those two points on a globe. Because of the large distance between Dillingham Airfield and St. Catharines/Niagara District Airport, the route shown on this map most likely appears curved because of this reason.
Try it at home! Get a globe and tightly lay a string between Dillingham Airfield and St. Catharines/Niagara District Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
IATA / ICAO Codes: | HDH / PHDH |
Airport Name: | Dillingham Airfield |
Location: | Mokuleia, Hawaii, United States |
GPS Coordinates: | 21°34'45"N by 158°11'49"W |
Operator/Owner: | U.S. Army |
Airport Type: | Public / Military |
Elevation: | 14 feet (4 meters) |
# of Runways: | 1 |
View all routes: | Routes from HDH |
More Information: | HDH Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | YCM / CYSN |
Airport Name: | St. Catharines/Niagara District Airport |
Location: | St. Catharines, Ontario, Canada |
GPS Coordinates: | 43°11'30"N by 79°10'15"W |
Operator/Owner: | Niagara District Airport Commission |
Airport Type: | Public |
Elevation: | 321 feet (98 meters) |
# of Runways: | 3 |
View all routes: | Routes from YCM |
More Information: | YCM Maps & Info |
Facts about Dillingham Airfield (HDH):
- In 1962, the State of Hawaii leased Dillingham for general aviation use.
- Dillingham Airfield covers an area of 134 acres at an elevation of 14 feet above mean sea level.
- The closest airport to Dillingham Airfield (HDH) is Wheeler AAF (HHI), which is located only 12 miles (19 kilometers) ESE of HDH.
- Nike missiles were installed in the 1950s, but were obsolete by 1970.
- Because of Dillingham Airfield's relatively low elevation of 14 feet, planes can take off or land at Dillingham Airfield at a lower air speed than at airports located at a higher elevation. This is because the air density is higher closer to sea level than it would otherwise be at higher elevations.
- Dillingham Airfield is part of a centralized state structure governing all of the airports and seaports of Hawaii.
- Dillingham Airfield (HDH) currently has only 1 runway.
- The furthest airport from Dillingham Airfield (HDH) is Ghanzi Airport (GNZ), which is nearly antipodal to Dillingham Airfield (meaning Dillingham Airfield is almost on the exact opposite side of the Earth from Ghanzi Airport), and is located 12,425 miles (19,995 kilometers) away in Ghanzi, Botswana.
- A communications station called Camp Kawaihapai was established here in 1922 on 67 acres along the Oahu Railway and Land Company line.
Facts about St. Catharines/Niagara District Airport (YCM):
- The airport primarily serves general aviation aircraft, but it is not unusual to see chartered aircraft delivering passengers to waiting limousines for a ride to the Niagara Fallsview Casino Resort or other local attractions.
- Seymour advocated for the placement of an Elementary Flying Training School at St.
- The furthest airport from St. Catharines/Niagara District Airport (YCM) is Margaret River Airport (MGV), which is located 11,437 miles (18,406 kilometers) away in Margaret River, Western Australia, Australia.
- The closest airport to St. Catharines/Niagara District Airport (YCM) is Niagara Falls International Airport (IAG), which is located only 13 miles (21 kilometers) ESE of YCM.
- A light aeroplane hangar has been constructed, Hydro power and telephone installed and gasoline and oil servicing facilities are conveniently located.
- St. Catharines/Niagara District Airport (YCM) has 3 runways.
- Because of St. Catharines/Niagara District Airport's relatively low elevation of 321 feet, planes can take off or land at St. Catharines/Niagara District Airport at a lower air speed than at airports located at a higher elevation. This is because the air density is higher closer to sea level than it would otherwise be at higher elevations.